Monique Péan, a former investment banker at Goldman Sachs, started taking design classes in her free time before realizing her passion was really in jewelry. In 2006, she launched her line and has since been recognized by everyone from Michelle Obama to Vogue and most recently, Fast Company.

While all of her pieces are exquisite and sustainable, I found this necklace to be particularly stunning. The piece is constructed out of fossilized walrus ivory and woolly-mammoth bone that is carved by hand and then finished with 18-karat rose gold, white diamonds and smoky topaz.